CN101426461A - Method of making an absorbent composite and absorbent articles employing the same - Google Patents

Method of making an absorbent composite and absorbent articles employing the same Download PDF

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Publication number
CN101426461A
CN101426461A CNA2007800141629A CN200780014162A CN101426461A CN 101426461 A CN101426461 A CN 101426461A CN A2007800141629 A CNA2007800141629 A CN A2007800141629A CN 200780014162 A CN200780014162 A CN 200780014162A CN 101426461 A CN101426461 A CN 101426461A
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CN
China
Prior art keywords
fabric
granule
composite material
absorbent article
absorb composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2007800141629A
Other languages
Chinese (zh)
Other versions
CN101426461B (en
Inventor
P·曾
K·E·张
A·赖特
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DSG Technology Holdings Ltd Virgin Islands
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DSG Technology Holdings Ltd Virgin Islands
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Filing date
Publication date
Application filed by DSG Technology Holdings Ltd Virgin Islands filed Critical DSG Technology Holdings Ltd Virgin Islands
Priority to CN202310797610.8A priority Critical patent/CN116983146A/en
Priority to CN201510324850.1A priority patent/CN105147462A/en
Priority to CN201611138810.9A priority patent/CN106580559A/en
Publication of CN101426461A publication Critical patent/CN101426461A/en
Application granted granted Critical
Publication of CN101426461B publication Critical patent/CN101426461B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • A61F13/15658—Forming continuous, e.g. composite, fibrous webs, e.g. involving the application of pulverulent material on parts thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A61F13/49426—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier having an absorbent medium
    • A—HUMAN NECESSITIES
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F13/51405—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material treated or coated, e.g. with moisture repellent agent
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/5323—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having absorbent material located in discrete regions, e.g. pockets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A61F13/536—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15764—Transferring, feeding or handling devices; Drives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/53051—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged
    • A61F2013/530547—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged positioned in a separate layer or layers
    • A61F2013/530554—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged positioned in a separate layer or layers and being fixed to a web
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/53051—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged
    • A61F2013/530547—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged positioned in a separate layer or layers
    • A61F2013/530562—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged positioned in a separate layer or layers being arranged in discontinuous pattern
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/530671—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being mixed with mineral or inert material, e.g. "introfying particles"
    • A—HUMAN NECESSITIES
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/5307—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials characterized by the quantity or ratio of superabsorbent material
    • A—HUMAN NECESSITIES
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A61F2013/5355—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes with terraced core
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/53908—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
    • A61F2013/53925—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive with intermittent pattern, e.g. spots
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

A method of making an absorbent composite that includes a first fabric, a second fabric, and particles positioned between the two fabrics and absorbent articles made from the absorbent composite. The particles are secured between the two fabric using adhesive, thermal plastic or combinations thereof. The fabrics are bonded together in a manner that limits particle movement between the fabrics. The bond pattern may define pockets or other shapes. In applications in which the bond pattern forms pockets, the particles may be positioned in the pockets. The particles may be SAP particles or other particles with advantageous properties.

Description

The method and the absorbent article that utilizes absorb composite material that prepare absorb composite material
Background of invention
[0001] the present invention relates generally to the method for preparing absorb composite material.The present invention also is usually directed to utilize the disposable absorbent article of absorb composite material.Disposable absorbent article comprises diaper, training pants, adult incontinence product, bodily exudate absorbent article, feminine hygiene article and other absorbent articles (being called as " disposable absorbent article " jointly).
[0002] three kinds of infrastructure components of existing disposable absorbent article general using: form inner surface top flat, form the egative film of outer surface and place top flat and egative film between absorbent cores.Top flat be designed to allow liquid from the absorbent article outside by top flat and enter absorbent cores.Top flat can be made by the liquid of certain limit and the water wetted material or the hydrophobic material of vapor permeable.The permeability usable surface activating agent (" interfacial agent ") of top flat increases.Surfactant reduces the surface energy or the contact angle at liquid-solid interface, and promotes that liquid passes through top flat.
[0003] egative film be designed to prevent fluid from absorbent cores by egative film and leave absorbent article.The impermeable thin film that egative film can be extended by the complete width at goods or the combination of class cloth material and impermeable thin film are made.Egative film also can have ventilative character (" breathability "), and this character allows steam to see through egative film and is not released in the fluid that stores in the absorbent cores.Egative film also can be by liquid non-permeate the non-woven material of vapor permeable make, as spunbond-melt and spray-spunbond (" SMS "), spunbond-as to melt and spray-as to melt and spray-spunbond (" SMMS "), micron, nanometer or split from fiber, spin molten or spunlaced, carded material etc.
[0004] absorbent cores is designed to hold and distribute the fluid by top flat.General absorbent cores is made by the stable high or ultra absorbing polymeric (SAP) of absorption base.SAP is usually by making such as the material of polyvinyl alcohol, polyacrylate, various graft starch and cross-linked sodium polyacrylate.SAP can be the form of granule, fiber, foam, net, ball, rule or erose agglomerate and thin film.Absorption base is generally defiber wood pulp or similar material.Absorption base is very bulk with respect to top flat, egative film and SAP.Most of thickness of diaper comes from absorbent cores.
[0005] consumer of absorbent article more and more needs thin absorbent article.In order to satisfy these needs, manufacturer reduces the thickness of absorbent article by the amount that reduces the absorption base that uses in the absorbent cores.Though the absorbent cores that obtains is thinner, they suffer damage at aspect of performance.Because the amount of absorption base reduces, the efficient of SAP stable (preventing that SAP from moving in absorbent cores) is reduced.Because SAP moves at in-core, the loss in efficiency of absorbent cores, and no longer include even absorbability.For example, not involved SAP tends in the poly-group in humidifying zone, and invalid to the Excreta of processing subsequent.
[0006] manufacturer has attempted addressing this problem by preparing little independent SAP bag or gluing together SAP.Yet these solutions are not success to a great extent.The SAP bag only makes migration be limited in bag and moves.Yet owing to still have granule to move, absorbent cores does not show even absorbability.Gummed SAP makes SAP stable, but obtains uncomfortable stiff absorbent cores, and the loss of the swelliong power of SAP.
Therefore [0007] need a kind of absorbent article of improvement, described goods continuity reduces the trend of products thickness, makes goods hardness reduce to minimum simultaneously, and shows splendid absorbability in addition.
Summary of the invention
[0008] the present invention discloses a kind of new method that does not need the absorb composite material and the preparation absorb composite material of absorption base.The present invention also discloses a kind of absorbent article in conjunction with described absorb composite material.New absorb composite material as herein described provides a kind of absorbent article, and this absorbent article can be done very thinly and submissive, keeps enough SAP to do wet integrity (evenly absorbability) to provide sufficient absorbability to reach simultaneously.Though this paper is described in and uses absorb composite material in the diaper, those skilled in the art are readily appreciated that absorb composite material prepared according to the methods of the invention can be used for multiple absorbent article.
[0009] the present invention also relates to a kind of absorbent article of the improvement in conjunction with described new absorb composite material.
[00010] one embodiment of the invention are a kind of method for preparing composite material sheet, said method comprising the steps of, arrange that first fabric is to receive granule, deposited particles on first fabric, binding agent is applied to second fabric, arrange second fabric with respect to first fabric, and be formed on the bonded part of extending between first fabric and second fabric.Method of the present invention can comprise further that granule wherein comprises the goods of SAP granule, skin nursing granule, odor adsorption granule, adhesive particle, ion-exchange particles and combination thereof.In addition, method of the present invention can comprise the step with the hydrophobic substance coated particle.
[00011] method of the present invention can comprise the step that makes first fabric conform to a surface.Described surface can be included in the depression that forms bag when conforming to the surface in first fabric.The SAP granule can be introduced in the bag that forms in first fabric.Can utilize suction to make first fabric conform to the surface.The binding agent that the is applied to second fabric fixedly enough concentration of effective dose dried particles applies.Concentration generally between 1 gram/square metre to 100 grams/square metre between, more particularly, binding agent can 5 gram/square metre and 75 grams/square metre between, even better 12 grams/square metre and 50 grams/square metre between concentration apply.The particulate total amount that binding agent can make adhesive bond 1 gram/square metre and 100 grams/square metre between mode apply.Method of the present invention can further be included in the step that before the deposited particles binding agent is applied to first fabric on first fabric.
[00012] bonded part of the inventive method can be tack line, and these tack lines can continuously or be interrupted, and can limit bag or other shapes and pattern.Perhaps, the bonded part can be bonding point.The bonded part of the inventive method can with the granule relative arrangement, and/or be arranged to prevent that straight line granule migration is greater than 2 inches.
[00013] the inventive method confession selects embodiment may further comprise the steps, arrange that first fabric is to receive granule, on first fabric, arrange granule, granule is fixed with respect to first fabric, on granule, arrange second fabric, and formation makes first fabric join the bonded part of second fabric to.The bonded part can be to separate to stop the discrete point of granule migration.The bonded part also can be to separate with tack line that stops the granule migration or the tack line that connects into single tack line.Tack line can be arranged to bag, and puts into some granules in bag.Granule can be SAP granule, skin nursing granule, odor adsorption granule, adhesive particle, ion-exchange particles and combination thereof.Granule useful binders, thermoplastic or its combination are fixed to first fabric.As additional or alternative, granule useful binders, thermoplastic or its combination are fixed to second fabric.Embodiment for choosing can further be included in the step that is shaped in particulate first fabric of reception.
[00014] the new disposable absorbent article of the present invention comprises top flat, egative film and places therebetween absorbent cores, at least a portion of one of wherein said egative film, top flat and absorbent cores is an absorb composite material, and described absorb composite material comprises first fabric, is bonded to second fabric of first fabric and the granule of adhering between first fabric and second fabric.Granule can be SAP granule, skin nursing granule, odor adsorption granule, adhesive particle, ion-exchange particles and combination thereof.
[00015] new product can further comprise the upright hoop of a pair of longitudinal extension that is spaced laterally apart with core, each hoop comprises the folded part of top flat and is fixed on the absorb composite material of the longitudinal extension in the folded part that the absorb composite material of described longitudinal extension comprises the first hoop fabric, is bonded to second hoop fabric of the first hoop fabric and the granule of adhering between first fabric and second fabric.The absorb composite material of longitudinal extension can be a plurality of parts of a continuous absorption composite.Top flat can comprise first fabric of absorb composite material.Absorbent cores can comprise absorb composite material.The absorb composite material of core can further comprise the granule that is positioned on second fabric and be bonded to the 3rd fabric of second fabric.The absorb composite material of core can comprise further that the 3rd fabric that is close to second fabric and arranges, the 4th fabric that bonds to the 3rd fabric reach the granule of adhering between the 3rd fabric and the 4th fabric.Second fabric and the 3rd fabric can be integral type.
[00016] new product can comprise egative film and the core that comprises absorb composite material.Goods can further comprise the acquisition layer of arranging with respect to absorbent cores.Goods also can comprise the top flat that comprises first fabric.
[00017] confession of new absorbent article selects embodiment to comprise top flat; Egative film; Absorb composite material, described absorb composite material comprises first fabric, is bonded to second fabric of first fabric and the granule absorbed layer of adhering between first fabric and second fabric, wherein said absorbed layer places between top flat and the egative film, and roughly be arranged in the position that is called as the crotch district between two parties, described absorbed layer is provided for being absorbed in the absorbent cores of the bodily exudate that receives in the crotch district.
[00018] embodiment of confession choosing can further comprise the upright hoop of a pair of longitudinal extension that is spaced laterally apart with absorbent cores, each hoop comprises the folded part of top flat and is fixed on the absorb composite material of the longitudinal extension in the folded part that the absorb composite material of described longitudinal extension comprises the first hoop fabric, is bonded to second hoop fabric of the first hoop fabric and the granule absorbed layer of adhering between the first hoop fabric and the second hoop fabric.In addition, the absorb composite material that is positioned at the longitudinal extension of the absorb composite material in crotch district and hoop can be the part of a continuous absorption composite construction arranging around the crotch district.
[00019] embodiment for choosing can comprise the absorbed layer that is stated from egative film, so that the part of egative film provides second fabric of absorb composite material.Egative film can further comprise the SAP granule of first backsheet layer, second backsheet layer and therebetween about 20gsm concentration, and second backsheet layer is the SMS with about 10gsm to 60gsm basic weight.Absorbed layer can be adhered between first fabric and second fabric, and binder concn 1 the gram/square metre and 100 the gram/square metre between.First fabric can be at discrete point bonding to second fabric, and these discrete points can limit bag.In addition, first fabric can be bonded to second fabric along many tack lines, and these tack lines can limit bag.
[00020] in another embodiment for choosing, new absorbent article comprise top flat, egative film and place top flat and egative film between absorbent cores, described absorbent cores comprises first fabric, second fabric, makes first fabric be connected to the bonded part of second fabric and the granule absorbed layer of adhering between first fabric and second fabric.Granule can be SAP granule and/or other useful granules.Absorbed layer can be stated under the part of top flat, so that the part of top flat provides second fabric of absorb composite material.Absorbed layer can be stated from the part of egative film, so that egative film partly provides first fabric of absorb composite material.
[00021] another embodiment of new disposable absorbent article can be included in about 50 grams in the absorbed layer/square metre and 650 grams/square metre between the SAP granule of concentration.The also available hydrophobic substance of SAP granule applies, and the SAP granule initially receives liquid in the absorbed layer to stop.The bonded part can limit the many successive lines that stop absorbed layer SAP granule to move.Can make successive line between first fabric and second fabric, form bag.The bonded part can limit the many lines that stop the interruption that absorbed layer SAP granules move.Can make the line of interruption between first fabric and second fabric, form bag.
[00022] in another embodiment, new absorb composite material comprise first fabric, be bonded to second fabric of first fabric and be fixed on first fabric and second fabric between the valid density granule.Useful binders, thermoplastic or its combination be the valid density granule fixedly.Available heat or ultrasonic bonding make first fabric be bonded to second fabric.Binding agent can be applied on first fabric and second fabric.Binding agent can 1 gram/square metre and 100 grams/square metre between concentration apply.
[00023] in another embodiment, binding part is along the periphery of particulate bag.Binding part can form figure, as herringbone, base brick shape, circle, triangle, point, dotted line, rectangle and combination thereof.Another embodiment also can comprise the discrete particles between first and second.
[00024] in order to understand following detailed Description Of The Invention better, aforementioned characteristics of the present invention and the technical advantage summarized quite widely.Other characteristics of the present invention and advantage are below described.Should be appreciated that disclosed specific embodiments can be easy to use the basis that makes an amendment or design other structures that realize the object of the invention.It will also be appreciated that this type of suitable structure does not break away from the present invention that accessory claim is set forth.Believe the characteristics of new feature of the present invention, by following explanation also in conjunction with the accompanying drawings, can understand these new features and other purposes and advantage better for tissue of the present invention and operational approach aspect.Yet, should clearly understand, each figure is only in order to illustrate and description provides, not as the qualification of the scope of the invention.
The accompanying drawing summary
[00025] in order fully to understand the present invention, now in conjunction with the accompanying drawings with reference to following explanation, wherein:
[00026] Fig. 1 is for preparing the sketch map of an embodiment of the method for absorb composite material of the present invention with felt wrapped roll;
[00027] Fig. 2 is for preparing the sketch map of another embodiment of the method for absorb composite material of the present invention with felt wrapped roll;
[00028] Fig. 3 is the sketch map that utilizes the inventive method shown in Figure 1 of other energy;
[00029] Fig. 4 is for replacing the modification of the method shown in Figure 1 of felt wrapped roll with ultrasonic bonding technology;
[00030] Fig. 5 is for replacing the modification of the method shown in Figure 2 of felt wrapped roll with ultrasonic bonding technology;
[00031] Fig. 6 is the diagram that can be used for the various possibility bond pattern of the inventive method and absorbent article;
[00032] Fig. 7 is for being formed and be used for the cross-sectional view of the bag of absorbent article of the present invention by the inventive method;
[00033] Fig. 8 is the perspective view of the disposable absorbent article of performance absorb composite material of the present invention;
[00034] Fig. 9 is the top plan view of disposable absorbent article of Fig. 8 of flattened state;
[00035] Figure 10 is the exploded view of the disposable product of Fig. 8;
[00036] Figure 11 utilizes absorb composite material of the present invention and the partial cross sectional view of the absorbent cores utilized by absorbent article of the present invention;
[00037] Figure 12 utilizes the confession of absorb composite material of the present invention to select embodiment and by the partial cross sectional view of the present invention for the absorbent cores of selecting absorbent article to utilize;
[00038] Figure 13 is for utilizing the cross-sectional view of the absorbent article of absorb composite material of the present invention in the lower limb hoop;
[00039] Figure 14 is for utilizing the cross-sectional view of saturated absorption blister packaged vaginal insert of the present invention in the lower limb hoop.
Detailed Description Of The Invention
[00040] describes in detail and accompanying drawing provided herein by research, those skilled in the art will obviously see, absorb composite material prepared in accordance with the present invention can be used for disposable absorbent article, more particularly, can be used for the disposable absorbent article such as diaper, training pants or other incontinence articles.Therefore, though following description is particularly related to the absorb composite material that uses in disposable diaper, the present invention should not be limited to structure and the method that this paper clearly describes and illustrates.Term related to the present invention " absorbent article " or " absorption clothes " comprise to be close to or contiguous wearer's body is placed to absorb and to hold the various disposable products and the clothes of various bodily exudates, body fluid or biofluid.
[00041] turn to accompanying drawing now, Fig. 1 shows an embodiment of the inventive method.Show that in Fig. 1 fabric 125 distributes from roller 120, and be stated from the conveyer belt 100 along production line.According to an embodiment, fabric 125 is a thermoplastic, and thermoplastic can be weaving material, non-woven material, thin film or its combination.Fabric 125 is fixed on the conveyer belt 100 by vacuum system 110.Vacuum system 110 is used to make fabric 125 to be fixed to conveyer belt 100.
[00042] in one embodiment, the surface of conveyer belt 100 has female, when fabric draws on the surface that leans against conveyer belt 100, forms cup in fabric 125.The surface of conveyer belt 100 is not limited to form the structure of cup in fabric, but can be constructed with multiple different surfaces shape and size.Example comprises ridge, convex shape and hole.In addition, surface configuration can be striden conveyer belt width and length evenly or uneven distribution.Perhaps, conveyer belt 100 can be flat.Conveyer belt 100 has in the application of hole or other similar structures therein, and the degree of depth of the bag that forms in fabric 125 can be changed by the power of vacuum system 110, elasticity or its combination of fabric 125.In addition, when fabric draws on the surface that leans against conveyer belt 100, the available elasticity that adds heat gain fabric 125.Can heat fabric by the conveyer belt of heating or in any other method known in the art.Can stride the surface of conveyer belt 100 or evenly apply vacuum 110 in selected position.For example, the surface of conveyer belt 100 has in the structure of depression therein, can only apply vacuum at recess.
[00043] on fabric 125, deposits SAP granule 135 by SAP allotter 130 then.SAP allotter 130 can be configured to make the SAP granule to be positioned at desired position on first fabric, perhaps can only be configured to make the SAP granule to deposit on first fabric, and wherein the SAP granule is arranged by another kind of method.Those skilled in the art understands can use a plurality of SAP allotters 130.Can be by reeling or other known methods make SAP granule 135 be deposited on, be arranged in or deposit and be arranged on the fabric 125.Perhaps, conveyer belt shown in Figure 1 can be inverted, so that vacuum system 110 adapts to from top suction.In this structure, fabric 125 is stated from the source of supply of SAP granule 135, and the SAP granule is remained on the surface of fabric 125 by vacuum system 110.In the embodiment for choosing, SAP allotter 130 can comprise the skin nursing granule, as ion exchange resin, deodorizer, antimicrobial, adhesive particle or other useful granules.In addition, though embodiment preferred relates to the SAP granule, method disclosed herein can with above-mentioned particulate any use that combines, comprise the combination that does not comprise SAP.Perhaps, the available favourable independent dissimilar granule of arranging along the production line (not shown) of allotter deposition, for example skin nursing granule.
[00044] SAP granule 135 can be arranged and concentrate on the fabric 125 for choosing method according to some.In one embodiment, vacuum system 110 and fabric 125 can be configured to allow vacuum system 110 SAP granule 135 evenly to be drawn on the surface that leans against fabric 125 or specific region.In another embodiment, the shape of fabric 125 guiding SAP granule 135 enters suitable position.For example, when fabric 125 is configured as bag, SAP granule 135 since vacuum system 110, conveyer belt vibration, coiling, conveyer belt angle or its combination roll in the bag.Perhaps, can arrange and control SAP allotter 130 and stride the surface strategy of fabric 125 and distribute SAP granule 135, this strategy is arranged and is included but not limited to aim at or misalignment, biasing or random with vertical.In addition, can arrange the SAP granule, make to have not have the particulate zone of SAP.In addition, useful binders is arranged the SAP granule, for example applies binding agent on the ad-hoc location on surface, deposits the SAP granule from the teeth outwards.In addition, the SAP granule can be arranged in fabric 125 and 155 on both.
[00045] in case the SAP granule has deposited and has been arranged on the fabric 125, just can second fabric 155 be introduced production line from roller 150.Second fabric 155 can be selected from multiple material, comprises spunbond thermoplastic or similar weaving or non-woven material, thin film or its combination.
[00046] binding agent 145 can be applied on the SAP granule 135 in many ways.Fig. 1 shows that binding agent 145 is applied on the fabric 155.Perhaps, binding agent 145 can be applied on fabric 125 and the SAP granule 135, is applied on the fabric 125 before SAP granule 135 is deposited on the fabric 125, perhaps is applied directly on the SAP granule before on the fabric 125 at the SAP particle deposition.In another embodiment, binding agent 145 is applied to the point that fabric 125 and 155 engages the place together.In another embodiment, apply a plurality of adhesive coatings.For example, binding agent 145 can be applied on the fabric 125 before SAP granule 135 deposition, had arranged after-appliedly to SAP granule 135 at them, was applied on the fabric 155 or its combination.As above embodiment substitute or additional, adhesive particle is mixed with SAP granule 135.In addition, according to the required absorbent properties of finishing composite, binding agent can be even, random or be applied with special pattern.
[00047] can apply binding agent according to several different methods well known by persons skilled in the art.For example, binding agent can be sprayed, roll on the surface that is coated with or is spun on fabric 155.Binding agent can be hydrophobic, hydrophilic, biodegradable, biologically-derived or its combination.Preferred adhesive is a hydrophobicity.In the coating concentration of binding agent can 1 gram/square metre and 100 restrain/square metre (" GSM ") between.Optium concentration is between 5GSM and 75GSM.In preferred embodiments, concentration is between 12GSM and 50GSM.In addition, should apply enough binding agents to cover at least 25% target area.
[00048] then fabric 125 and 155 is bonded together.Fig. 1 shows the hot adhesion system of felt wrapped roll 160 and 170 that wherein uses.Yet can use other bonding system/methods.For example, can use the ultrasonic bonding system of Figure 4 and 5.In the bonding process and after the bonding process, binding agent 145 can remain on relatively-stationary position with SAP granule 135 with respect to fabric.Bond pattern can distribute with SAP granule 135 and aim at.Perhaps, bond pattern can not distribute with SAP granule 135 and aim at.In this embodiment, before maybe will be by SAP granule 135 bondings by SAP granule 135 bonding, stamping device can adapt to SAP granule 135 is touched on one side.These embodiments are eliminated needs bonding point and SAP distribution of particles synchronous.
[00049] fabric 155 and 125 is shown as two kinds of materials.Yet those skilled in the art understands, and described fabric can reality be the part of same material.In this structure, folding integral type fabric is to cover the SAP granule.Perhaps, can be before applying second fabric 155 edge of folding fabric 125.In fabric 125 and the 155 isolating embodiments, fabric 125 and 155 can be identical or different material therein.In addition, fabric 155 can be the size of the specific region of covering fabric 125, for example central area.
[00050] in case fabric bonds together, absorb composite material 195 promptly is collected on the rewinding machine 200.
[00051] Fig. 2 shows the preferred embodiment of the inventive method.Fabric 125 is carried along conveyer belt 100.When conveyer belt 100 is carried fabrics 125, the shallow layer of binding agent 145 is applied on the fabric 125.The same with Fig. 1 method, according to the required absorbent properties of finishing composite, binding agent can be even, random or be applied with special pattern.Apply before SAP granule 135 depositions though show binding agent 145 among the figure, can envision embodiment for choosing.For example, can be according to applying binding agent about the described embodiment of Fig. 1.
[00052] after applying binding agent, SAP granule 135 depositions also are arranged on the fabric 125.SAP granule 135 directly is deposited on the fabric 125, as shown in Figure 2, perhaps deposits indirectly, for example by striding fabric 125 air blast SAP granules.The particulate weight of SAP helps fabric 125 is fixed on the conveyer belt 100.In addition, the SAP granule can be similar to the disclosed mode of Fig. 1 is arranged.
[00053] then second fabric 155 is sent into production line from roller 150.Arrange that second fabric is to cover SAP granule 135.Binding agent 145 prevents that the SAP granule from moving freely between two fabrics.Then the gained sandwich structure is carried out hot adhesion to felt wrapped roll.As described in to Fig. 1, bond pattern can be aimed at or misalignment with SAP granule 135.Collect absorb composite material 195 by rewinding machine 200 then.As described in to Fig. 1, fabric 125 and 155 can be the part of monolithic.In addition, can be to the described mode folding fabric of Fig. 1.In another embodiment, fabric 125 useful binders apply, and suppress on the particulate source of supply of SAP.
[00054] Fig. 3 is similar to Fig. 1 and 2, and difference is to arrange the energy 900 along assembly line, as stove or microwave generator.The energy apply heat and or radiation 910, heat and or radiation 910 can be used for the molten thermoplastic binding agent.Also scalable adds heat, with the concrete section of the granule of fusion particular type or fiber, fabric or the skin of melt granules/binding agent only.
[00055] Figure 4 and 5 are similar to Fig. 1 and 2, and difference is with ultrasonic bonding fabric to be bonded together.Figure 4 and 5 show ultrasonic bonding system (210a and 210b).Be readily appreciated that Fig. 1-5 shows the different embodiments of new method, and various aspects that can favourable as required combination distinct methods.Yet all combinations importantly are applied to the amount and the adhesion strength of binding agent 145, adhesive particle or its combination of SAP granule 135.As Fig. 1 is mentioned, the optium concentration of binding agent is between 12GSM and 50GSM, although other concentration can be accepted.In all embodiments, importantly the concentration height of binding agent 145 must be enough to stop 135 migrations of SAP granule.Yet this concentration should be too not high, expands so that apply SAP granule 135 and reduce SAP.Binding agent should only stop enough SAP granule 135 migrations to guarantee even absorbability.Though show, those skilled in the art understand, and the energy 900 shown in Figure 3 configuration shown in also can Fig. 2,4 and 5 applies.
[00056] Fig. 6 (a)-(q) shows the different bond pattern that the inventive method contains.But zone of bond pattern complete closed, a partially enclosed zone, or the local bonding zone is provided.Line and some expression bonded part.Solid line is described tack line.Tack line can form opening shape or close-shaped, and as the shape of finding at example (a) and (c), it describes the continuous tack line of the bag of complete closed SAP granule 135, perhaps as example (g), the zones of different of absorb composite material is separated.Dotted line as finding at example (b) with (m), is the interruption tack line that not exclusively seals the bag of SAP granule 135.In these configurations, dry SAP granule migration is subjected to binding agent and inhibition continuous or the interruption bond pattern.Available interruption bond pattern (pond patter) replaces continuous bond pattern, and vice versa.In addition, although Fig. 6 shows continuously or the interruption bond pattern, can use and be interrupted and the combination of bond pattern continuously.
[00057] Fig. 7 shows the partial cross sectional view of absorb composite material 195.Fig. 7 shows how binding part 192 can be used in the bag of separating SAP granule 135.As bond pattern is mentioned, can make SAP granule 135 be completely enclosed within by bond pattern limit the bag in, partially enclosed in limits by bond pattern bag in or only stop by bond pattern.In this article " prevention " be meant that SAP granule 135 can not be directly moves to another zone from a zone of core, and should move around the bonded part.
[00058] in one aspect of the invention, type by changing the particulate amount of SAP, used fabric and quantity and structure variable (as the ratio of SAP with binding agent) also apply absorb composite material at the goods diverse location, can obtain multiple function or advantageous feature in absorb composite material.
[00059] in addition, those skilled in the art understand, and can revise the method for the above-mentioned single absorb composite material of structure, press absorb composite material with the preparation multilamellar.In comprising multiwalled structure, layer can be the sheet of absorb composite material 195, and these sheets are laminated together, forms single structure with the alternating layer that forms single structure or formation fabric and SAP granule 135.Those skilled in the art understands, and by binding agent being applied to the top (Fig. 1) of fabric 155, applies 135 layers of the 2nd SAP granules and the 3rd fabric (not shown), can obtain these alternating layers.Equally, can increase other layers, this is applicable to the restriction of the maximum ga(u)ge of adhesive method.
[00060] in any one embodiment of absorb composite material, SAP granule 135 can apply with the miscibility hydrophobic substance.Coating is taken in as initially slowing down liquid, thereby stores the barrier layer or the film of other or secondary Excreta SAP capacity.About this point, coating makes the absorption rate homogenize between the Excreta.In the method shown in Fig. 1 to 5, can be before applying binding agent 145, apply after the binding agent 145 or apply coating simultaneously.Perhaps, binding agent is mixed with coating.
[00061] in one embodiment, can on SAP granule 135, apply the shallow layer of mineral oil.Described coating stops the SAP granule initially to be taken in, and allows with the more time liquid to be sprawled in goods.Preferred mineral oil with about 0.00001 gram/gram SAP extremely the concentration of about 0.1 gram/gram SAP apply (designing) according to specific products.Perhaps, mineral oil can be applied to the objectives zone.In this way, before regions coated activation and beginning swelling, impel the liquid initial of reception to spread into uncoated zone.
[00062] can be used for disposable absorbent article by the absorb composite material of method for preparing or as one or more elements of disposable absorbent article.The element of absorbent article comprises egative film, top flat, absorbent cores, envelope wall or hoop (comprising the shank rivel), egative film/absorbent cores composite, top flat/absorb composite material and combination thereof.These structures of following more detailed description.
[00063] Fig. 8 is the perspective view of an embodiment of diaper 10 form disposable absorbent articles.Diaper 10 comprises top flat 50, egative film 60 and absorbent cores (not shown).Described diaper further comprises along diaper longitudinal extension and elastification to conform to the upright obstruction hoop 34 of wearer's buttocks.In addition, diaper comprises elastic waist belt 52 and element 26.The element of using 26 extends to and engages the corresponding terminal relatively of diaper, so that diaper is fixed around the wearer.
[00064] Fig. 9 illustrates the composite web structure of diaper 10 of Fig. 8 of roughly open and flat not folding configuration.Further specify as following, can be subsequently with web frame finishing, folding, sealing, welding and/or be manipulated in addition and finish or the disposable diaper 10 of final form.To embody diaper 10 of the present invention in order helping describing, to describe pair of end limit 92 with reference to the side 90 of longitudinally extending axis AA, horizontal expansion central shaft BB, a pair of longitudinal extension and extension between side 90.Along longitudinal axis AA, diaper 10 comprises first end zone or front waist region 12, the second end zone or back waist region 14 and therebetween crotch district 16.The feature of each front waist region 12 and back waist region 14 is to be positioned on center body part 20 every sides and from a pair of ear field or the ear 18 of side 90 horizontal expansions.Fastening structure 26 (for example conventional belt fastener) is fixed on each ear 18 along the back waist region 14 of diaper 10.
[00065] when diaper 10 was worn around waist, front waist region 12 was pressed close to wearer's front waist region, and back waist region 14 is pressed close to back waist region, and crotch district 16 is attached to around the crotch district and the bottom.For diaper 10 correctly being fixed on one's body the wearer, make the waist of the ear 18 of back waist region 14, towards anterior and aim at the ear 18 of front waist region 12 around the wearer.Fixed surface can be positioned on the inner surface of front waist region 12 or the outer surface or be provided by the inner surface or the outer surface of front waist region 12.Perhaps, fastener 26 is positioned on the ear 18 of front waist region 12, and can be fixed on the ear 18 of back waist region 14.
[00066] Figure 10 is the exploded view of the diaper of Fig. 8 and 9.Be applicable at least three layers of diaper structure general using of the present invention.These three layers comprise egative film 60, absorbent cores 46 and top flat 50.Described diaper structure can comprise or not comprise a pair of envelope wall or the lower limb hoop 34 of upwards arranging and preferably be equipped with at least one or more longitudinal elasticity members 38 that separate from top flat 50.Show that below absorb composite material 195 structures all can be utilized or use to any of these diaper element or these combination of elements.In addition, can increase acquisition layer 48 to improve performance.
Egative film
[00067] as above mention, diaper 10 utilizes egative film 60, and described egative film 60 covers core 46, preferably exceeds core 46 and extends towards the side 90 and the end limit 92 of diaper 10.In one aspect of the invention, egative film 60 is by the monolayer material sheet structure of absorb composite material 195.In this structure, fabric 125 is arranged as the outer surface of egative film 60.
[00068] in addition, a confession selects embodiment to can be used for the gel sealing.For the application of using the gel sealing, the egative film of disposable absorbent article of the present invention is thinner relatively, and the pliability of improvement is provided.When drying, egative film is soft and ventilative, but when becoming wet, forms and give the impermeable boehmite gel confining bed of egative film essence liquid (promptly on the inner surface of egative film).The gel confining bed forms by SAP granule 135 swellings.
Top flat
[00069] same, absorb composite material 195 of the present invention can use with the top flat that absorbs clothes or as the top flat that absorbs clothes.Top flat 50 is preferably soft, submissive, shows good infiltration, and reduces the trend of getting wet again from liquid permeable material.When wearing diaper 10, top flat 50 tight placed near the wearer.In this way, this top flat 50 allows the body excretions quick penetrations, flowing to core 46 sooner, and does not allow this Excreta to flow back to by top flat 50.Top flat 50 can be by any structure of the water wetted material of wide region liquid and vapor permeable.The surperficial usable surface activating agent of top flat is handled, and passes through to promote liquid to shift, especially at the central area or the face that are positioned at core and in-core surface top piece.Also available material (for example Aloe) coating that has the prevention erythra or reduce erythra character of top flat.
[00070] in one embodiment, top flat 50 is formed by absorb composite material 195, and described absorb composite material 195 covers the essence Zone Full of disposable absorbent article 10, comprises the whole front waist region 12 of essence, back waist region 14 and crotch district 16.In addition, the ear layer of interior zone 18 is formed by identical single top sheet materials, therefore can be known as with top flat 50 to be one when forming the horizontal expansion part of top sheet materials.Perhaps, top flat 50 can be formed by the multiple different materials of striding the change of top flat 50 width.This multi-disc design allows to produce preferred character of top flat and zones of different.
Absorbent cores
[00071] as the additional of above embodiment or substitute, the absorbent cores of disposable absorbent article can be by the laminate layers (not shown) of absorb composite material 195, absorb composite material 195 or the multiple layer structure of SAP granule 195 and fabric.Figure 11 and 12 describes to form respectively the cross-sectional view of the alternating layer of the SAP granule 135 of multilamellar absorb composite material 700 and 900 and fabric.As shown in these figures, core 46 can comprise the discriminating layer (710 and 910) of SAP granule 135.According to desired use, these layers can be even or uneven.In inhomogeneous multilamellar absorb composite material 900, the concentration of SAP granule 135 can be in given layer, difference in interlayer or its combination.
[00072] Figure 11 describes composite construction 700, and wherein SAP granular layer 710 and tissue layer 720 are alternately to form complete composite construction 700.By the absorb composite material sheet is bondd together, fold the absorb composite material monolithic, or in preparation process, use the multi-ply construction absorb composite material, also can construct hierarchical design.In folding the application, composite material foldable can for C shape folding, Z-shaped folding, V-arrangement is folding, W-fold or its combination.In addition, folding can be open, sealing or eclipsed.
[00073] Figure 12 describes multilamellar absorb composite material 900.As shown in figure 12, can arrange high concentration SAP granule zone 910 by strategy, so that (as the crotch district of absorbent article) provides other absorbability in the specific region.Those skilled in the art understands, and the area with high mercury of can setovering is with the amount and the direction of controlling liquid infiltration.In addition, have area with high mercury the layer can with each layer combination of essence conforming layer.Perhaps, can be by arranging a plurality of layers of high SAP concentration range of formation of absorbent cores.
[00074] core of different embodiments of the present invention can be configured to whole length and/or the width that essence extends disposable absorbent article.Yet preferred described core is arranged in or concentrates in addition the crotch district of goods.In different embodiments, core extends to the edge of goods, and SAP granule 135 concentrates on crotch district or another target area of goods.In another embodiment, granule can be SAP granule, skin nursing granule such as ion exchange resin, deodorizer, antimicrobial, adhesive particle or other useful particulate combinations.
The envelope wall
[00075] turn to Figure 13 and 14 now, in another aspect of the present invention, disposable absorbent article 10 of the present invention uses and utilizes a pair of envelope wall of absorb composite material 195 or bind round 34.Each seals the wall construction of the longitudinal extension that wall 34 is spaced laterally apart for every side of being preferably placed at core 46 and with longitudinal center.Vertical end of envelope wall 34 can for example be connected to the front waist region 12 and the back waist region 14 of top flat 50.The end of preferred envelope wall 34 is inwardly pegged (tack down), and for example is attached to web frame by binding agent.This structure makes envelope wall 34 effective toe-ins, and generally is considered to make envelope wall 34 to show the leakage performance improvement.
[00076] Figure 13 provides the cross-sectional view of diaper 10 of the present invention.Diaper 10 comprises egative film 60, absorbent cores 46, acquisition layer 48 and top flat 50.As shown in figure 13, core is an absorb composite material 195.Diaper 10 comprises that also also centering on absorb composite material 195 ends by folding top flat 50 wraps up a pair of envelope wall that forms or bind round 34.Perhaps, the absorb composite material 195 of hoop in 34 can be different with described absorbent cores 46.
[00077] preferably seals wall 34 and be equipped with the elastic component 38 that extends along the physical length of envelope wall 34.In a kind of common application, elastic component 38 places in the envelope wall 34 when stretching condition, preferably places envelope wall 34 tops, is glued to the envelope wall at its end at least then.When discharging or allow to relax, elastic component 38 is inwardly withdrawn.When wearing article 10, elastic component 38 is used for to influence the mode that seals between goods 10, buttocks and the thigh envelope wall 34 being shunk around the buttocks and the thigh of user.Core 46 can be the monolithic or the multilamellar of absorb composite material 195, as mentioned above.
[00078] Figure 13 describes the structure of soft and dry time envelope wall 34.On the other hand, Figure 14 describes to become the envelope wall after wetting, and wherein absorb composite material 195 has expanded, makes envelope wall 34 be in the elasticity set-up positions.Different with traditional lower limb hoop of the prior art, envelope wall 34 preventions that this elasticity erects flatten (for example, when the wearer sits down), thereby guarantee to prevent seepage, and especially explosive liquefaction feces is discharged and urinated fast.
Optional layer
[00079] disposable absorbent article of the present invention can utilize other layers, comprises acquisition layer or surge layer 48, and this layer is preferably placed at (for example Figure 10) between top flat and the core.A function of this acquisition layer is to make flow of liquid sprawl or disperse, so that liquid distributes on wicking surface more equably.This is used to make flow velocity to slow down, and makes liquid have enough time quilt core to absorb.Described acquisition layer is used to also prevent that the core part is saturated, and the suitable remainder of core does not absorb any liquid simultaneously.
Belt loop
[00080] disposable absorbent article must be fixed on one's body the wearer.This is the most important to diaper, because diaper can't help to draw on the wearer, as training pants or incontinent briefs, but centers on wearer's fastening.Retaining element is complied with elastic component by the standard sealing that influences between wearer and belt and the lower limb hoop, so that liquid is contained within the goods, absorbs then; In other words, make it not by the gap leakage between wearer and the product edges.Retaining element can be bur, mechanical hook and-loop fastener or possible cotton rope, is about to goods one end and is fixed to vertically any object of a relative end.Retaining element also can adhere to other materials for coadhesive does not adhere to them mutually.
[00081] in the embodiment shown in the accompanying drawing (referring to for example Figure 10), goods 10 are fixed on one's body the wearer by the bracelet spare 26 that is permanently attached to (for example directly sewing up) egative film 60.Bracelet spare 26 and horizontal relative ear 22 contacts of extending from egative film, at this, they are owing to the binder compound that is applied to fastener 26 is maintained fixed.Perhaps, goods 10 can be training pants, pull-on diaper etc.In this structure, goods 10 can have or not have bracelet spare 26.
Belt
[00082] utilize the belt of elastic component 52 to arrange along the lateral part of goods 10, so that when wearing, belt is along wearer's waist location.Usually, belt preferably produces accurate sealing (transverse elasticity member 52) to waist, so that liquid wastes are not from the regional seepage between waist elastic and the wearer's waist.Accurate sealing has remarkable meaning, though because liquid may finally be absorbed by filler, wearer's hydraulic shock may be suppressed the absorbance ability of filler.Therefore, belt receiving fluids when liquid is absorbed.Secondly, belt can have absorption liquid ability (referring to for example United States Patent (USP) 5,601,544, described patent is attached to herein by reference).
[00083] therefore, the present invention is very suitable for reaching purpose of the present invention, and reach above-mentioned target and advantage and wherein intrinsic other.Although described present embodiment preferred (with the diaper form), can make many variations to the layout of details, article component or the element of structure and the step of method.For example, can be at the miscellaneous part of goods or top flat, egative film, absorbent cores, envelope wall and other the absorption composite construction different with other goods uses beyond the diaper.These variations are easy to be expected by those skilled in the art, and are included in the scope of spirit of the present invention and accessory claim.
[00084] though described the present invention and advantage thereof in detail, should be appreciated that, can under the present invention who does not break away from the accessory claim qualification, make various variations, substitute and change.In addition, the application's scope is intended to be not limited to the particular of composition, means, method and the step of process described in this description, machinery, preparation, material.Be easy to from disclosure understanding, can utilize composition, means, method or step realization and the corresponding embodiment essence identical function as herein described of present process existing or exploitation later on, machinery, preparation, material or obtain the essence identical result.Therefore, accessory claim is intended to comprise composition, means, method or the step of these processes, machinery, preparation, material in its scope.

Claims (71)

1. method for preparing composite material sheet said method comprising the steps of:
Arrange that first fabric is to receive granule:
Deposited particles on described first fabric;
Binding agent is applied to second fabric;
Arrange described second fabric with respect to described first fabric; With
Be formed on the bonded part of extending between described first fabric and second fabric.
2. the process of claim 1 wherein that described granule comprises the SAP granule.
3. the method for claim 2, described method further comprise the step that makes first fabric conform to the surface.
4. the method for claim 3, wherein said surface have the sunk area that forms bag when described first fabric conforms to the surface in described first fabric.
5. the method for claim 4, described method further comprise the step that guiding SAP granule enters described bag.
6. the method for claim 3 wherein makes described first fabric conform to described surface with suction.
7. the method for claim 2, the concentration of effective dose dried particles is applied to second fabric to wherein said binding agent with being enough to fixedly.
8. the method for claim 7, the concentration of wherein said binding agent be 1 gram/square metre to 100 grams/square metre.
9. the method for claim 7, the concentration of wherein said binding agent be 5 grams/square metre to 75 grams/square metre.
10. the method for claim 7, the concentration of wherein said binding agent be 12 grams/square metre to 50 grams/square metre.
11. the method for claim 2, described method further are included in the step that before the deposited particles binding agent is applied to described first fabric on described first fabric.
12. the method for claim 11, the particulate total amount of wherein said adhesive bond be 1 the gram/square metre to 100 the gram/square metre.
13. the method for claim 2, wherein said bonded part are tack line.
14. limiting, the method for claim 13, wherein said tack line comprise particulate bag.
15. the method for claim 13, wherein said tack line is interrupted.
16. the method for claim 2, wherein said bonded part are bonding point.
17. the method for claim 2, wherein said bonded part is arranged with respect to granule.
18. the method for claim 2, wherein said bonded part are arranged to prevent that the migration of straight line granule is greater than 2 inches.
19. the method for claim 2, described method further comprise the step with the hydrophobic substance coated particle.
20. the process of claim 1 wherein that described granule is selected from SAP granule, skin nursing granule, odor adsorption granule, adhesive particle, ion-exchange particles and combination thereof.
21. a method for preparing composite material sheet said method comprising the steps of:
Arrange first fabric, to receive granule:
On first fabric, arrange granule;
Granule is fixed with respect to described first fabric;
On granule, arrange second fabric; With
Formation makes described first fabric join the bonded part of described second fabric to.
22. the method for claim 21, wherein said bonded part are to separate to stop the discrete point of granule migration.
23. the method for claim 21, wherein said bonded part are to separate to stop the tack line of granule migration.
24. the method for claim 23, wherein said tack line connects into single tack line.
25. the method for claim 23, wherein said tack line limits bag, and wherein at least some granules are positioned at described bag.
26. the method for claim 21, described method further are included in the step that is formed for receiving coating of particles in described first fabric.
27. the method for claim 21, wherein said granule are selected from SAP granule, skin nursing granule, odor adsorption granule, adhesive particle, ion-exchange particles and combination thereof.
28. the method for claim 21, wherein said granule is fixed to first fabric with binding agent, thermoplastic or its combination.
29. the method for claim 21, wherein said granule is fixed to second fabric with binding agent, thermoplastic or its combination.
30. the method for claim 21, described method further comprises the step that binding agent is applied to first fabric and second fabric.
31. a disposable absorbent article, described disposable absorbent article comprises:
Top flat;
Egative film; With
Place absorbent cores therebetween, at least a portion of one of wherein said egative film, top flat and absorbent cores is an absorb composite material, and described absorb composite material comprises
First fabric;
Be bonded to second fabric of described first fabric; With
The granule of between described first fabric and second fabric, adhering.
32. the goods of claim 31, wherein said granule are selected from SAP granule, skin nursing granule, odor adsorption granule, adhesive particle, ion-exchange particles and combination thereof.
33. the goods of claim 32, described goods further comprise the upright hoop of a pair of longitudinal extension that is spaced laterally apart with described core, described hoop comprises the folded part of described top flat respectively and is fixed on the absorb composite material of the longitudinal extension in the described folded part that the absorb composite material of described longitudinal extension comprises
The first hoop fabric;
Be bonded to the second hoop fabric of the described first hoop fabric; With
The granule of between described first fabric and second fabric, adhering.
34. the goods of claim 33, the absorb composite material of wherein said core and described longitudinal extension are the part of a continuous absorption composite.
35. the goods of claim 32, wherein said top flat comprise described first fabric of described absorb composite material.
36. the absorbent article of claim 32, wherein said absorbent cores comprises described absorb composite material.
37. the absorbent article of claim 36, the described absorb composite material of wherein said core further comprises
The granule of on described second fabric, arranging; With
Be bonded to the 3rd fabric of described second fabric.
38. the absorbent article of claim 36, the described absorb composite material of wherein said core further comprises
The 3rd fabric that contiguous described second fabric is arranged;
Be bonded to the 4th fabric of described the 3rd fabric; With
The granule of between described the 3rd fabric and the 4th fabric, adhering.
39. the absorbent article of claim 38, wherein said second fabric and the 3rd fabric are integral type.
40. the absorbent article of claim 32, wherein said egative film and core comprise described absorb composite material.
41. the absorbent article of claim 32, described absorbent article further comprise the acquisition layer of arranging with respect to described absorbent cores.
42. the absorbent article of claim 32, wherein said top flat comprise described first fabric.
43. a disposable absorbent article, described disposable absorbent article comprises:
Top flat;
Egative film;
Absorb composite material, described absorb composite material comprises:
First fabric;
Be bonded to second fabric of described first fabric; With
The granule absorbed layer of between described first fabric and second fabric, adhering, wherein said absorbed layer places between top flat and the egative film, and be centrally placed in the position that is called as the crotch district usually, described absorbed layer is provided for being absorbed in the absorbent cores of the bodily exudate that receives in the described crotch district.
44. the goods of claim 43, described goods further comprise the upright hoop of a pair of longitudinal extension that is spaced laterally apart with described absorbent cores, described hoop comprises the folded part of described top flat respectively and is fixed on the absorb composite material of the longitudinal extension in the described folded part that the absorb composite material of described longitudinal extension comprises
The first hoop fabric;
Be bonded to the second hoop fabric of the described first hoop fabric; With
The granule absorbed layer of between the described first hoop fabric and the second hoop fabric, adhering.
45. the goods of claim 44, the absorb composite material that wherein is positioned at the described longitudinal extension of the described absorb composite material in described crotch district and described hoop is the part of a continuous absorption composite construction arranging around the crotch district.
46. the goods of claim 44, wherein said absorbed layer is stated from the described egative film, makes the part of described egative film that described second fabric of described absorb composite material is provided.
47. the absorbent article of claim 43, wherein said egative film comprise the SAP granule of first backsheet layer, second backsheet layer and therebetween about 20gsm concentration, and described second backsheet layer is the SMS with about 10gsm to 60gsm basic weight.
48. the absorbent article of claim 43, wherein said absorbed layer are adhered between described first fabric and second fabric, and binder concn be 1 the gram/square metre to 100 the gram/square metre.
49. the absorbent article of claim 43, wherein said first fabric arrives described second fabric at discrete point bonding.
50. the absorbent article of claim 43, the wherein said first discrete point limits bag.
51. the absorbent article of claim 43, wherein said first fabric is bonded to described second fabric along many tack lines.
52. the absorbent article of claim 50, wherein said tack line limits bag.
53. a disposable absorbent article, described disposable absorbent article comprises:
Top flat;
Egative film; With
Be arranged in the absorbent cores between described top flat and the described egative film, described absorbent cores comprises:
First fabric;
Second fabric;
The bonded part is connected on described second fabric at described first fabric in bonded part; With
The granule absorbed layer of between described first fabric and second fabric, adhering.
54. the goods of claim 53, wherein said granule comprises the SAP granule.
55. the disposable absorbent article of claim 54, wherein said absorbed layer are stated from below the part of top flat, make the part of described top flat that described second fabric of described absorb composite material is provided.
56. the disposable absorbent article of claim 54, wherein said absorbed layer is stated from above the part of egative film, makes described egative film that described first fabric of described absorb composite material partly is provided.
57. the disposable absorbent article of claim 54, the particulate concentration of described SAP of wherein said absorbed layer be about 50 the gram/square metre to 650 the gram/square metre.
58. the disposable absorbent article of claim 54, described disposable absorbent article further comprise the hydrophobic substance coating on the SAP of described absorbed layer granule, described coating is suitable for stoping that the SAP granule initially receives liquid in the described absorbed layer.
59. the disposable absorbent article of claim 54, wherein said bonded part limit the continuous lines that the SAP granule of many described absorbed layers of prevention moves.
60. the disposable absorbent article of claim 59, wherein said continuous lines is through being shaped to form bag between described first fabric and second fabric.
61. the disposable absorbent article of claim 54, wherein said bonded part limit the intermittent line that the SAP granule of many described absorbed layers of prevention moves.
62. the disposable absorbent article of claim 61, wherein said intermittent line is through being shaped to form bag between described first fabric and second fabric.
63. an absorb composite material, described absorb composite material comprises:
First fabric;
Be bonded to second fabric of described first fabric; With
Fixed valid density granule between first fabric and second fabric.
64. the absorb composite material of claim 63, wherein said valid density granule is fixing with binding agent, thermoplastic or its combination.
65. the absorb composite material of claim 63, wherein said first fabric is bonded to described second fabric with hot adhesion or ultrasonic bonding.
66. the absorb composite material of claim 64, wherein said valid density granule with adhesive to first fabric.
67. the absorb composite material of claim 65, wherein said binding agent are applied on first fabric and second fabric.
68. the absorb composite material of claim 66, wherein said binding agent with 1 the gram/square metre to 100 the gram/square metre concentration apply.
69. the absorb composite material of claim 67, wherein said binding part is along the periphery of particulate bag.
70. the figure that the absorb composite material of claim 63, wherein said binding part form and are selected from herringbone, build brick shape, circle, triangle, point, dotted line, rectangle and combination thereof.
71. the absorb composite material of claim 63, wherein said absorb composite material further comprise the discrete particles that is arranged between described first and second.
CN200780014162.9A 2006-02-22 2007-02-22 Method of making an absorbent composite and absorbent articles employing the same Active CN101426461B (en)

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